.global-spin {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* 页面过渡动画 */
.fade-enter {
  opacity: 0;
}

.fade-enter-active {
  opacity: 1;
  transition: opacity 300ms ease-in;
}

.fade-exit {
  opacity: 1;
}

.fade-exit-active {
  opacity: 0;
  transition: opacity 300ms ease-in;
} 